United States. Department of the Treasury. "Weekly Bill Results, January 31, 1977, Release Number b-9," in United States. Department of the Treasury. "Volume 205," Press Releases of the United States Department of the Treasury (January 4, 1977 - February 28, 1977) : 783-784. https://fraser.stlouisfed.org/title/6111/item/587048/toc/529106 , accessed on June 25, 2024.